sensors Mode-S transponder

AE04F4

ICAO 24-bit transponder address

Currently assigned to 84-00165 · BEECH 200 Super King Air

Hex
AE04F4
Octal
53402364
Decimal
11,404,532
Tail
84-00165
Type
BE20
No current signal · last broadcast 3h ago
Flights observed
18
Distinct callsigns
3
Country
-
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AE04F4.

Callsign history 3 distinct

Callsign Airline Flights Last seen
CATS22 - 10 2026-05-07
CATS55 - 7 2026-05-01
CATS73 - 1 2026-04-23

Recent flights last 18

DateFlightRouteTakeoffLandingDuration
2026-05-07 CATS22 - May 7, 06:35 UTCMay 7, 07:10 UTC35m
2026-05-07 CATS22 - May 7, 05:35 UTCMay 7, 05:55 UTC20m
2026-05-07 CATS22 - May 7, 03:50 UTCMay 7, 04:10 UTC20m
2026-05-03 CATS22 - May 3, 03:40 UTCMay 3, 04:20 UTC40m
2026-05-02 CATS22 - May 2, 23:15 UTCMay 3, 03:00 UTC3h 45m
2026-05-01 CATS55 - May 1, 08:05 UTCMay 1, 09:15 UTC1h 10m
2026-05-01 CATS55 - May 1, 05:25 UTCMay 1, 05:45 UTC20m
2026-05-01 CATS55 - May 1, 04:25 UTCMay 1, 04:45 UTC20m
2026-04-30 CATS55 - Apr 30, 09:40 UTCApr 30, 10:15 UTC35m
2026-04-30 CATS55 - Apr 30, 08:30 UTCApr 30, 08:45 UTC15m
2026-04-30 CATS55 - Apr 30, 06:50 UTCApr 30, 07:15 UTC25m
2026-04-30 CATS55 - Apr 30, 05:00 UTCApr 30, 05:15 UTC15m
2026-04-25 CATS22 - Apr 25, 03:55 UTCApr 25, 04:45 UTC50m
2026-04-25 CATS22 - Apr 25, 00:10 UTCApr 25, 00:50 UTC40m
2026-04-24 CATS22 - Apr 24, 07:15 UTCApr 24, 08:00 UTC45m
2026-04-24 CATS22 - Apr 24, 03:05 UTCApr 24, 03:30 UTC25m
2026-04-24 CATS22 - Apr 24, 00:25 UTCApr 24, 01:15 UTC50m
2026-04-23 CATS73 - Apr 23, 23:10 UTCApr 23, 23:25 UTC15m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the 84-00165 page for operator, model, and routing details .

Mode-S AE04F4 frequently asked

What is Mode-S code AE04F4?
AE04F4 is an ICAO 24-bit transponder address. Assigned to 84-00165.
Is AE04F4 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE04F4, octal 53402364, decimal 11,404,532.
What flights does AE04F4 operate?
Mode-S AE04F4 has broadcast 3 distinct callsigns, including CATS22, CATS55, CATS73.